Carbs, Calories, Protein, and Fats!

Help me out.
Before i googled some answers today i was naive and assumed the following…

1) Excess consumed protein was passed out the digestive system.
2) The body can not covert consumed fats into body fat.
3) Carbs. The body converts carbs consumed into fat.
4) Calories, Short term energy that spikes your blood sugar level. some excess converted to fats.

But after studying google today, It appears i am idiot….

The answer i was searching for today was ‘whats the diff between sugars/calories and carbohydrates’?

And the answer i seem to get is…

Proteins, Fats and Carbohydrates all have Calories…. WTF?

Apparently the body ether converts carbohydrates to fat or calories depending on the level energy needed?
And excess protein also can be converted to Fat or energy/calories….

It appears they are all the same just with varying levels of calories and protein.

Am i rite? or am i still lost?

I preferred my old understanding better.

It seems difficult to understand dieting when basically no matter what you consume can all ultimately be converted to fat anyway if consuming more than can be burnt.

I would have preferred to know that eating lean meets hi hi vegetable diets resulted in massive weight loss. But i discovered now that even vegetable like Peas corn potatoes all have hi levels of carbs. !gram of carbs=4 calories. 1gram of protein also = 4 calories. 1 gram fat = 9 calories.

Is it just me, or no mater what we eat we are still just basically eating calories. And if we eat to much it will be converted to fat.

It seems the logical answer for weight lose is to basically eat less than im eating now, on all food groups….